Square D by Schneider Electric 9999 BC-2 Electrical Interlock Kit (Size 0, Type B, Series A) is a Class 9999 interlock accessory for Square D disconnects and includes one normally closed contact. Designed for Size 0, Series A installations, the kit provides a mechanical interlock between two Square D disconnects to prevent both from being closed at once. This interlock kit is used with Square D Class 9999 Type BC-2 devices to enable interlocked switching in applicable panels.
